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After finally managing to get some encoding options from this list 
everything went smoothley untill it got to the burning part .. below is 
the error i got....

enterprise# ls
dvd.iso
enterprise# growisofs -dvd-video -Z /dev/cd1 dvd.iso
WARNING: /dev/cd1 already carries isofs!
About to execute 'mkisofs -dvd-video dvd.iso | builtin_dd of=/dev/pass1
obs=32k seek=0'
mkisofs: Unable to make a DVD-Video image.
:-( write failed: Input/output error

enterprise# growisofs -dvd-video -Z /dev/cd0 dvd.iso
Executing 'mkisofs -dvd-video dvd.iso | builtin_dd of=/dev/pass0 obs=32k
seek=0'
mkisofs: Unable to make a DVD-Video image.
:-( write failed: Input/output error

What am i missing//not doing correctly ?